http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




Xicor
Xicor


X1228

Real Time Clock/Calendar/CPU Supervisor with EEPROM



No Preview Available !

X1228 pdf
New Features
Repetitive Alarms &
Temperature Compensation
4K (512 x 8)
X1228
2-WireRTC
Real Time Clock/Calendar/CPU Supervisor with EEPROM
FEATURES
• Real Time Clock/Calendar
— Tracks time in Hours, Minutes, and Seconds
— Day of the Week, Day, Month, and Year
• 2 Polled Alarms (Non-volatile)
— Settable on the Second, Minute, Hour, Day of the
Week, Day, or Month
— Repeat Mode (periodic interrupts)
• Oscillator Compensation on chip
— Internal feedback resistor and compensation
capacitors
— 64 position Digitally Controlled Trim Capacitor
— 6 digital frequency adjustment settings to
±30ppm
• CPU Supervisor Functions
— Power On Reset, Low Voltage Sense
— Watchdog Timer (SW Selectable: 0.25s, 0.75s,
1.75s, off)
• Battery Switch or Super Cap Input
• 512 x 8 Bits of EEPROM
— 64-Byte Page Write Mode
— 8 modes of Block Lock™ Protection
— Single Byte Write Capability
• High Reliability
— Data Retention: 100 years
— Endurance: 100,000 cycles per byte
• 2-Wire™ Interface interoperable with I2C*
— 400kHz data transfer rate
• Frequency Output (SW Selectable: Off, 1Hz,
4096Hz, or 32.768kHz)
• Low Power CMOS
— 1.25µA Operating Current (Typical)
• Small Package Options
— 14-Lead SOIC and 14-Lead TSSOP
APPLICATIONS
• Utility Meters
• HVAC Equipment
• Audio / Video Components
• Set Top Box / Television
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers / PDA
• POS Equipment
• Test Meters / Fixtures
• Office Automation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial / Medical / Automotive
BLOCK DIAGRAM
32.768kHz
X1
X2
PHZ/IRQ
Select
SCL
SDA
Serial
Interface
Decoder
RESET
Control
Decode
Logic
8
OSC Compensation
Oscillator
Frequency 1Hz
Divider
Timer
Calendar
Logic
Time
Keeping
Registers
(SRAM)
Control/
Registers
(EEPROM)
Status
Registers
(SRAM)
Alarm
Watchdog
Timer
Low Voltage
Reset
Compare
Alarm Regs
(EEPROM)
4K
EEPROM
ARRAY
Battery
Switch
Circuitry
VCC
VBACK
*I2C is a Trademark of Philips.
REV 1.3 3/24/04
www.xicor.com
Characteristics subject to change without notice. 1 of 31



No Preview Available !

X1228 pdf
X1228
PIN DESCRIPTIONS
14-Pin TSSOP/SOIC
X1
X2
NC
NC
NC
RESET
VSS
1
2
3
4
5
6
7
14 VCC
13 VBACK
12 PHZ/IRQ
11 NC
10 NC
9 SCL
8 SDA
NC = No internal connection
REV 1.3 3/24/04
www.xicor.com
Characteristics subject to change without notice. 2 of 31



Part Number X1228
Description Real Time Clock/Calendar/CPU Supervisor with EEPROM
Maker Xicor - Xicor
Total Page 31 Pages
PDF Download
X1228 pdf
Download PDF File
X1228 pdf
View for Mobile




Featured Datasheets

Part Number Description Manufacturers PDF
X1205 Real Time Clock/Calendar X1205
Xicor
PDF
X120FG Diode (spec sheet) X120FG
American Microsemiconductor
PDF
X120SG Diode (spec sheet) X120SG
American Microsemiconductor
PDF
X120UFG Diode (spec sheet) X120UFG
American Microsemiconductor
PDF
X1226 Real Time Clock/Calendar with EEPROM X1226
Xicor
PDF
X1226 Real Time Clock/Calendar X1226
Intersil Corporation
PDF


Part Number Start With

0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

site map

webmaste! click here

contact us

Buy Components